Marking pen



FIG. 1 is a perspective view of a marking pen showing my new design, in which the cap is on.

FIG. 2 is a front elevational view of the marking pen of FIG. 1.

FIG. 3 is a rear elevational view of the marking pen of FIG. 1.

FIG. 4 is a left side elevational view of the marking pen of FIG. 1.

FIG. 5 is a right side elevational view of the marking pen of FIG. 1.

FIG. 6 is a top plan view of the marking pen of FIG. 1.

FIG. 7 is a bottom plan view of the marking pen of FIG. 1; and,

FIG. 8 is a perspective view of the marking pen of FIG. 1, in which the cap is left off. 

CLAIM The ornamental design for a marking pen, as shown and described. 